             response (tags/disassociate-by-concept-ids
                        token tag-key [{:concept-id c1-p2-concept-id}])]
         (tags/assert-tag-disassociation-response-ok?
-          {["C1200000004-PROV2"] {:warnings [(format "Collection [%s] does not exist or is not visible."
-                                                     c1-p2-concept-id)]}}
+          {["C1200000004-PROV2"] {:errors [(format "Collection [%s] does not exist or is not visible."
+                                                   c1-p2-concept-id)]}}
           response)))
 
     (testing "ACLs are applied to collections found"

            response (tags/disassociate-by-concept-ids
                       token tag-key [{:concept-id coll-concept-id}])]
        (tags/assert-tag-disassociation-response-ok?
          {["C1200000011-PROV3"] {:warnings [(format "Collection [%s] does not exist or is not visible."
                                                     coll-concept-id)]}}
          response)))))

(deftest disassociate-tag-failure-test

          response)))

    (testing "Associate to collection revision and whole collection at the same time"
      (let [response (tags/associate-by-concept-ids
                       token tag-key [{:concept-id c1-p1}
                                      {:concept-id c1-p1 :revision-id 1}])]
        (tags/assert-invalid-data-error
          [(format "Unable to tag a collection revision and the whole collection at the same time for the following collections: %s."
                   c1-p1)]
